Native American Mauls?

[sergeir]

These were found together in an old shop on my grandparent's farm. Is the one without the haft grove an actual maul/artifact or not? The only reason I suspect it may be is it does show some wear on the rounded end. These are the only photos I have.

 

[Buckleberry]

The top one definitely looks worked, better pictures would help, the other one is natural.